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  • Snares designed to position and tighten fine gauge flexible adjustable wire loops around the optical nerve for mechanical resection. These devices typically consist of a hollow tubular structure (e.g., a cannula), with one or more adjustable fine-gauge wire loops that protrude at the working end. The snare loops are made of twisted wires that are attached to a mechanism at the proximal end that includes a butterfly nut and a ratchet (e.g., Foster enucleation snare) and controls how much wire extends out of the channel and may stop the movement at any time; the handle is usually wide and straight to the cannula. Ophthalmic enucleation snares are usually reusable devices intended for resection of the optical nerve deep into the orbit when total eye enucleation procedures are performed (e.g., to insert implants).
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